Drain trap



Feb. 2, 1926.

G. D.' CASPER DRAIN TRAP Filed April 9, 1923 Evwzmtoz Patented Feb. 2,1926.

"UNITED' ST ATES 1,571,270? PATENT oFFicE.

GEORGE D. CASPER, 01 NEW YORKQN. Y., ASSIGNOR OI ONE-HALF '10 WILLIAM W.

SCEUSKY, OF LONG ISLAND CITY, NEW YORK.

Danni TRAP.

Application filed A ril 9,1923. Serial No. 630,710.

To all whom z't may concern:

Be it known that I, GEORGE D. CASPER, a citizen of the United States,and a resident of New York, in the county of Queens and State of NewYork, have invented certain new and useful Improvements in Drain Traps,of which thefollowing is a specilication.

This invention relates to drain traps and particularly to drain trapsadapted for connection to laundrytubs, kitchen sinks and the like. i

The main object of the invention is to provide a drain trap forconnection to such receptacles which will not require lead pipes andwiped joints but which can be quickly and conveniently installed merelyby using wrenches and with full compliance with the sanitary regulationsand ordinances now customary in towns and cities.-

Another object is to provide such a drain trap thatv wen be adapted forconnection to a plurality of tubs, sinks or the like i and which willprevent the passage of sewer gas or objectionable odors, from one tub orother receptacle to another in the same system, through the piping.

The means I prefer to employ for accomplishing the above objectstogether with other a vantageous features of my improved drain trap areillustrated in the drawing accomp'anying and forming part of thisspecification, and in which-- Figure 1 is a vertical section partly inelevation of a drain trap embodying my improvements. v

Fig. 2 is a plan of a portion of the same, and

Fig. 3 is a perspective view showing one manner of utilizing. myimproved drain trap.

Like characters of reference refer to like parts in all the figures ofthedrawing.

have shown two such connections for con-' nee ting the trap to two pipessuch as indicated by 7 and 8 respectively. Any suiti able means may beprovided to connect the pipes 7 and 8 to the member 6 but ordinarily .Iemploy couplings such as 9 and 10, that 60,

at 9 composed of a shouldered coupling nut '11 and apacking 12 clampedbetween a flange 13 on the pipe and the seat 14 on the member 6. Ashoulder 15 on the coupling nut 11 engages the flange 13 of the pipe andcausesthe sameto press against the packing 12 when the nut 11 istightened on the thread 16 on the connection portion of the member 6.The coupling 10 is I similar to that for the joint las will be clearfrom the drawing The member 6 is held connected to the main portion 2 ofthe trap by any suitable means such as the coupling nut 17. The saidcoupling surrounds the tubular portion 18 of the member 6 which portionis preferably adapted to enter the socket 5 in the member 2. The nut 17is provided with a shoulder 20 and a recessed portion 21 in which isplaced suitable packing ma 30 terial 22 so that on clamping the nut 17by turning its threaded portion on'the thread .a partition 24 whichdivides the upper part of the interior of said member into two portions25 and 26 and there is a free loweredge 27 of said partition whichextends down considerably below the top of the water seal of the tra andwhich is indicated by 28, so that alt ough water-can flow down each ofthe pipes -7 and 8 and through the trap through the chambers 25 and 26respectively and thence throu h the portion 18 and the member 2 to the.out et, no gases or odors can pass around from the pipe 7 through themember 6 and up the pipe 8 or vice versa. The member 6 is adapted to bechanged to many different positions relatively to the member 2. That isit can be turned about on the axis" of the socket 5 and can be. movedupward or downward on previously loosening the nut 17, and when adesired position of the member is attained the said nut can be againtightened securing the members 2 and 6 in the selected position.

Fig. 3 illustrates one manner of using the drain trap which is heredesignated by T and shown connected to a sink and two laundry tubs 31and 32. Two pipes 7 and 8 are used, the pipe 7 connected to the sink 30and the pipe 8 connected to thedouble fitting 33 which in turn isconnected to both the tubs 31 and 32. I

From the foregoing it will be clear that no lead piping is necessary inmy improved installationand that the various couplings or pipeconnections can be installed merely by the use of wrenches, and it willalso be noted that no wiped joints are required for any of the trapconnections. It will be obvious that so long as the water seal remainsin the trap, no foul air or gas can -pass from the tubs 31, 32, throughthe pipe 8, trap; T, and then up the pipe? and out of the outlet of thesink 30.

What I claim is A self-cleaning drain trap having a water seal andembodying a member having an below the water seal outlet and a junctureportion on the inlet part thereof below the water seal surface, a memberhaving a-portion to fit said juncture portion of the first-mentionedmember, adapted to be secured thereto in difierent positions bothaxially and vertically, and having two pipe connections both above thewaterseal, jolning passages separated by a single wall that is abovesaid juncture portion and whose lower edge'is below the water sealsurface and whereby the inlet pipes are water-sealed from each other,and in which inlet member the area of the lower orifice thereof exceedsany single cross section of passages, and means either of said branchsurface whereby the first-mentioned memberand the member having saidpipe connections are joined together at said juncture portion. v

Signed at New York, in the county of New York, and State of day ofMarch, 1923.

New York, this 30th GEORGE D. CASPER.

